684 PROFESSOR DR. E. BINZ. 



(3) Ch. Darwin, ' Insectivorous Plants/ London, 1875, pp. 

 201—203. 



(4) T. Appert, ' Arch. f. pathol. Anatomic,' Ixxi, p. 364, 

 1877 (from Professor Arnold's laboratory, Heidelberg). 



(5) C. Fr. W. Krukenberg, ' Vergleichend. physiolog. 

 Studien,' Heidelberg, 1880, i, p. 8. 



